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Finding the Fourth Proportional to 2,775.91, 4,161.02 and 1,316.29

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Solution

The fourth proportional to 2,775.91, 4,161.02 and 1,316.29 is: 1,973.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.91 : 4,161.02 = 1,316.29 : x
  2. Step 2: Convert to fraction form
    2,775.91/4,161.02 = 1,316.29/x
  3. Step 3: Cross multiply
    2,775.91x = 4,161.02 × 1,316.29
  4. Step 4: Simplify right side
    2,775.91x = 5,477,109.02
  5. Step 5: Solve for x
    x = 5,477,109.02/2,775.91
  6. Step 6: Final answer
    x = 1,973.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.